US Bridges

3800 West over Bear River

Fair

Cache County, Utah · 1.5 Miles West of Benson · Structure no. 005016F

Built
1977
48 years old
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
158 ft
2 main spans
Daily traffic
252
2014 count
Owner
County
County Highway Agency

About this bridge

3800 West over Bear River is a prestressed concrete continuous stringer/multi-beam or girder carrying 3800 West over Bear River in Cache County, Utah. It was built in 1977, so it is 48 years old, older than the Utah average of 40.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 252 vehicles a day, roughly 1% of them trucks, projected to reach 306 by 2034. The structure is 158 ft (48.2 m) long and 30 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
Carries3800 West
CrossesBear River
Location1.5 Miles West of Benson
RouteCounty Highway 1258
CountyCache County
StateUtah
Coordinates41.79803, -111.92932
Functional classRural Minor Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating35.7 US tons
Inventory rating21.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length158 ft (48.2 m)
Longest span80 ft (24.4 m)
Deck width30 ft (9.1 m)
Roadway width27 ft (8.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic252 (2014)
Projected traffic306 by 2034
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was 3800 West over Bear River built?

It was built in 1977, making it 48 years old in 2025.

What condition is 3800 West over Bear River in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in May 2024.

How much traffic does 3800 West over Bear River carry?

About 252 vehicles per day (2014 count), of which roughly 1% are trucks.

How long is 3800 West over Bear River?

The structure is 158 ft (48.2 m) long with a longest span of 80 ft (24.4 m) and a deck 30 ft wide.

Who owns 3800 West over Bear River?

It is owned by the County Highway Agency.